Go to Chart of Setup from the Employer / Setup drop down menu and click the 'BACS Payment Description' link under 'Payment & Deduction''. Click on the Edit button. Now enter the BACS payment description in the box given. The entered description will appear on bank statement next to BACS payment you send them. For example salary, wages, etc may be appropriate. Then, click on the Save button to save the entered data.
Road Map - Edit BACS Payment Description
Employer/Setup -> Chart of Setup -> Payment & Deduction -> BACS Payment Description Link -> Edit button -> Save button
( 'Employer/Setup' is the button positioned in the tasking zone menu at the top. It is the first button from the left)